Hãng sản xuất: HANNA - Ý Range 0.00 to 9.99 FTU 10.0 to 99.9 FTU 100 to 1000 FTU Range Selection Automatic Resolution 0.01 FTU from 0.00 to 9.99 FTU 0.1 FTU from 10.0 to 99.9 FTU 1 FTU from 100 to 1000 FTU Accuracy ±2% of reading plus 0.05 FTU Repeatability ±1% of reading or 0.02 FTU, whichever is greater Stray Light < 0.1 FTU Light Source IR LED @ 860nm Light Detector Silicon Photocell Method Ratio Nephelometric Method. Display 60 x 90mm backlit LCD Calibration Two, three or four point calibration Log Memory 200 records Serial Interface RS232 or USB Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing Power Supply 4 x 1.5V AA alkaline batteries or AC adapter Auto Shut-off After 15 minutes of non-use Dimensions 224 x 87 x 77 mm (8.8 x 3.4 x 3.0”) Weight 512 g (18 oz.)